Description:This grinding disc uses diamond as abrasion and combined with composite material. There is sticky cloth which can stick on milling machine.Features:1, Using special binding agent2, Strong grinding force and smoothness. 3, Polish quickly and use for long time. 4, No color left on stone after polishing.Specification:Size:Diameter: 100 mmThickness: 4 mm (appr.)Granularity: 50/100/300/800/1500/2000/3000 Inner Diameter: 10 mm (appr.)Used for:1, Processing of artificial stone, granite, marble, ect.2, Refurbishment of ground or stairs which are made of granite, marble or artificial stone. 3, Angle grinder, hydrostone-flat grinder, electric hand drill, etc.Package includes:7 x Grinding Discs1 x Sticky DiscNote:Please stick the grinding discs well to prevent the grinding discs from flying off or shifting.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..